The NASA SCIence Files™
The Case of the Barking Dogs
Rebroadcast date: Wed., Jan. 22, 2003
Running time: 56:50
In The Case of the Barking Dogs, the tree house detectives accept the challenge of determining why dogs in the surrounding neighborhoods have unexpectedly started barking early in the morning and late at night. While investigating the mystery, the detectives learn about sound: what it is, how it is transmitted, and how people and animals hear.
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